

function email(){
    var R_email = this.value;
    var reg = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/;
    if(!reg.test(R_email)){
        alert("邮箱格式不正确，请重新输入！");
        return false;
    }
}

// F_email.onchange = function(){
//     var R_email = this.value;
//     var reg = /^\S{1,5}$/;;
//     }
function jump(){
    window.location.href="./register.html";
 }